“…The martingale approach to optimal asset allocation was pioneered by Pliska [4], Karatzas et al [5], and Cox and Huang [6]. The mathematical basis of this approach is the martingale method for stochastic optimal control which was pioneered by Rishel [37], Duncan and Varaiya [38,39], and Davis [40]. The martingale approach has been used to discuss optimal asset allocation problems in some filtered financial models (see, e.g., Sass and Haussmann [15], Korn et al [23], and Siu [24] and the relevant references therein).…”